First of all, you need to determine what your main musical instruments are, and then formulate a questionnaire to ask the following questions:

1. Which musical instruments are you interested in?

2. How much the target consumers like guitars (main musical instruments);

3. Determine the appropriate pricing for guitars;

4. Choose appropriate sales points (such as interest Hobbies, relaxation, or making friends);

5. Ranking of the importance of consumer requirements for various aspects of guitars (quality, brand, price, style, etc.);

6. Consumption The main channels through which readers receive information (advertising, introductions from friends, TV commercials, etc.);

7. Choose appropriate promotion methods (free piano lessons for buying musical instruments, price discounts, gifts, etc.);

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8. What are consumers’ requirements for music store conditions from high to low (teachers>environment>price>distance);

A blank option can be added to the above question header to allow respondents to Have your own room for development

You can also think of other survey questions and methods. This is all I can think of. Please give me lots of criticism and advice